Viewing archive of Friday, 14 September 2012
Solar activity report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2012 Sep 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 258 Issued at 2200Z on 14 Sep 2012 IA. Analysis of Solar Active Regions and Activity from 13/2100Z to 14/2100Z: Solar activity decreased to very low levels. Region 1569 (S12E14) produced occasional B-class flares. It showed a slight decrease in intermediate spots, but retained a beta-gamma magnetic configuration. No significant changes were observed in the remaining spotted regions. No new regions were numbered. No Earth-directed CME activity occurred during the period.IB. Solar Activity Forecast
Solar activity is expected to be very
low through the period (15 - 17 September) with a chance for a
C-class flare.
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to increase to quiet to unsettled levels on day 1 (15
September) due to a coronal hole high-speed stream. A further
increase to unsettled levels is expected on day 2 (16 September)
with a chance for active levels due to the arrival of the CME
associated with the filament disappearance on 13 September. Field
activity is expected to decrease to quiet to unsettled levels on day
3 (17 September).
III. Event Probabilities 15 Sep to 17 Sep
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 14 Sep 101 Predicted 15 Sep-17 Sep 095/095/095 90 Day Mean 14 Sep 122
V. Geomagnetic A Indices
Observed Afr/Ap 13 Sep 006/006 Estimated Afr/Ap 14 Sep 003/003 Predicted Afr/Ap 15 Sep-17 Sep 009/010-011/015-007/010
VI. Geomagnetic Activity Probabilities 15 Sep to 17 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 30% | 10% |
| Minor storm | 01% | 10% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 20% |
| Minor storm | 15% | 30% | 20% |
| Major-severe storm | 05% | 30% | 10% |
All times in UTC
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